Window.



J. KIEFER.

WINDOW. APPLICATION FILED AUG. 11, 1913.

Patented May 5, 1914.

il Zzzzease.s.

- Unrr s JACOB KIEFER, 0F ZURICH, SWITZERLAND, ASSIGNGR T0 THE FIRM OF 3'. G. KIEFEB, OF ZURICH, SWITZERLAND.

WINDOW.

To all whom it may concern:

Be it known that I, J ACOB KIEFER, a citizen of the Republic of Switzerland, residing at Zurich, Switzerland, have invented certain new and useful Improvements in Windows; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification.

This invention relates to an improvement in windows and in particular to windows provided with a sash which in its lower position may be turned inwardly and which is prevented from accidentally turning by means of bolts. According to this invention the bolt is brought into its locking position, that is into the position in which it prevents an inward movement of the lowered window sash by means of a ledge arranged on said window sash. The result of this arrangement is that this bolt-look can easily be manipulated, in particular 'when the window is large and that the safety against an undesired turning or movement of the lowered window sash is increased.

A further advantage of windows constructed according to this invention provided with two parts consists in that the lower ends of upper guide-rails are bent in such a way, that they bring the ledges in contact with the bolt. 7

A further feature of this invention consists in that the guide-grooves for one window sash are deeper than the guide-grooves of the other window sash and that the first mentioned grooves are connected at their lower end by means of curved grooves of the same depth to the less deep grooves of the other window sash, whereby the guide pins of one window sash having a length corresponding to the depth of the guide grooves of this sash are however prevented from entering into the grooves of the other sash. According to this invention there are also provided lateral projections on the lower guide pins of the lower window sash, said projections engaging during the turning of the lower window sash, stationary pins so that the guide-pins are prevented from shifting.

The accompanying drawing illustrates a Specification of Letters Patent.

Application filed August 11, 1913.

Serial No. 784,177.

convenient mode of carrying the present invention into effect.

In the drawing Figure 1 shows a section on the line AA of Fig. 2. Fig. 2 is a section on the line BB of the Fig. 1, showing the window sashes in another position. Fig. 3 is a section on the line 6-0 of Fig. 1. Figs. 1 to 6 show different views of a detail and Figs. 7 and 8 show views of another detail.

In the walls 1 of the window opening are provided at both sides fixed rails 2, 4 and adjoining grooves 3, 5 serving as guides. The grooves 5 are deeper than the grooves 3 and they are connected by means of curved grooves 13 having the same depth as the groves 5 with the grooves 3. Each of the guide-pins 8 running in the grooves 3 or 5 and 13 and provided on the window sashes 6 and 7 is provided with a projection 11. The guide pin 8 of the window sash 7 running in the grooves 5 and 13 is longer than the guide pin of the window sash 6, so that the guide-pins 8 of the sash 7 can only run in the grooves 5 and 13. Besides the grooves 3 there is provided on both sides a rail or ledge 14:, which, when the pin 8 of the window sash is moved past the points where the grooves 13 run over into the grooves 3, prevents the pins 8 from entering into said grooves 13, there being provided for this purpose pins 15 on both sides of the win dow-sash 6, which pins are brought into contact with the rails 14, when the pin 8 moves past said points. The window sash can therefore only be moved in the outer grooves.

Near the upper end of'the groove 5 there is provided on the wall 1 at least at one end a bolt 16, project-ing from the wall and movable in a vertical direction. This bolt 16 is a part of a plate 19 projecting through a slot 17 of an angle-iron 18. The plate 19 is provided with a slot 20 through which projects a screw bolt 21 fastened to one shank of the angle-iron 18. A spring 22 arranged underneath the nut 23 keeps the bolt 16 at any time in the proper position. The belt lies in its uppermost position in the path of a projection 9 of the window sash which is in its lowermost position and which is turned inwardly, so that the projection strikes against the bolt 16. The projection 9 forms a part of a plate 25, which is provided with a further projection 10 and Patented May 5, 1914-.

which is fastened to the window sash. The projection 9, which is inclined lies so much lower than the projection 10 that the bolt 16 does not come in its lowermost position into the path of the parts 9 and 10 so that the projection 9 glides through above this bolt 16 and the projection 10 underneath said bolt, when the window sash is moved in wardly. The projections 11 engage then from underneath stationary pins 24:, so that the pins 8 are prevented from moving upwardly during the turning of the window sash.

The lower part of the rails 2 is bent sideward at a right angle and this part has an upwardly bent end 26. These ends prevent an upward movement of the lower window sash when it is moved out of its closed position till the projections 9, 10 are underneath the end of the guide rail t. On the other hand the end 26 guides the projection 10 for a short distance in such a way, that it cannot move away from the guide rail and strike against the bolts 16.

If after the cleaning of the window the bolt 16 has not been brought into the end position, in which it prevents an inward. turning of the window sashes the projection 9 strikes against the bolt 16, when the window sash 7 is moved downward, so that the bolt is shifted into its locking position. The end 26 prevents the projection 9 from moving out of the path of the bolt 16 before the latter is in its locked position, since the projection 10 lies between the rail I and the end 26 when the projection 9 has been brought into contact with the bolt 16 and it remains there till the bolt 16 is in its locked position.

I claim:

1. In a window provided with two sashes, of which the one is capable of being turned inwardly, a locking bolt, guide rails and guide-grooves in both side-walls of the window for the two sashes and a projection on the window sash to be lowered, said locking bolt being brought by the projection of the lowered window sash into the position, in which it prevents a turning of this sash.

2. In a window provided with two sashes of which the one is capable of being turned inwardly, a locking bolt, guide-rails and guide-grooves in both side walls of the window for the two window sashes, a projection on the window sash to be lowered, upwardly bent ends on one of said guide rails, these ends guiding said projection toward the locking bolt, when the window provided wit-h this projection is lowered,

3. In a window provided with two sashes of which the one is capable of being turned inwardly, a locking bolt, guide-rails and guide-groovcs in both side walls of the window for the two sashes, the guide grooves for one sash. being deeper than the guide grooves for the other sash and the first mentioned grooves being connected with the last mentioned grooves by arced grooves of the same depth as the first mentioned grooves, guiding pins running in said grooves and having a length corresponding to the depth of the grooves in which they run, means for preventing the guide pins of one sash from running into the grooves of the other sash, a projection on the sash to be lowered, said locking bolt being brought by this projection of the lowered window sash into the position in which it prevents a turning of said sash.

4;. In a window provided with two sashes of which the one is capable of being turned inwardly, a locking bolt, guide rails and guide grooves in both side walls of the window for the two sashes, guide-pins running in said grooves, fixed pins, the lower guide pins of the sashes being provided with lateral projections engaging said fixed pins when the sash is turned inwardly, and a projection on the sash to be lowered, said looking bolt being brought by the projection of the lowered sash into the position, in which it prevents a turning of said sash.

I11 testimony that I claim the foregoing as my invention, I have signed my name in presence of two subscribing witnesses.

JACOB KIEFER.

WVitnesses AUeUs'r Rimes, ARNOLD LEHNER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Eatents, Washington, D. C. 

